Bainitic Low Fatigue Rail

British Steel's Bainitic Low Fatigue rail BLF offers exceptional rolling contact fatigue (RCF) resistance thanks to its unique microstructure.

Designed for switch blades and mobile points on high speed track with a higher risk of rapid premature failure, its performance is proven by over a decade of use in France, Switzerland and the Channel Tunnel.

The improved RCF performance provided by our low carbon, carbide-free BLF grades leads to lower life cycle costs through reduced maintenance requirements, especially under extreme traffic densities.

Two grades are available - BLF320 and BLF360 - to provide extreme contact fatigue resistance to critical track areas such as high speed switchblades and movable points. Where the highest levels of contact fatigue resistance are required, the BLF grades deliver industry leading performance.

Proven performance

The British Steel BLF grades have been in mainline use for over ten years proving exceptional RCF resistance in the most challenging conditions. In extended monitoring programmes spanning rail lives in excess of 850MGT, our BLF rail has never required grinding to control RCF.

Indeed so good is the performance, that BLF is mandated for all new French TGV high-speed movable points. What’s more, the performance of our BLF rails in the Channel Tunnel has meant that they are scheduled to remain in service whilst those surrounding them are being replaced.